Patent EP0323256A2 successfully refreshed from Google Patents.
EP0323256A2
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EP
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Supercharging pressure control method for internal combustion engines
Assignee: Honda Motor Co Ltd
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Filing: 1988-12-29
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Granted: —
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Expires: 2008-12-29
Abstract
Abstract A method of controlling supercharging pressure in an internal combustion engine based on a basic control amount determined in dependence on operating conditions of the engine. The basic control amount is corrected in response to a difference between an actual value of the supercharging pressure and a desired value of same when the engine is in a feedback control region. The basic control amount is corrected in accordance with the change rate of the supercharging pressure when the engine is in an operating condition immediately before the feedback control region. The supercharging pressure is controlled based upon a second basic control amount when the supercharging pressure is below a predetermined value determined by the engine rotational speed and the change rate of supercharging pressure in the above operating condition. The feedback control is started on condition that the actual supercharging pressure has increased above a second predetermined value set depending upon operating parameters of the engine and a parameter representative of an environmental condition of the engine. The feedback control is started when a predetermined period of time has elapsed after the supercharging pressure has increased above the second predetermined value. The feedback control is effected when the supercharging pressure is in a steady state, while the supercharging pressure is controlled in open loop mode when it is in a transient state.
Inventors
- 👤 Kazuo Inoue
- 👤 Masao Kubodera
- 👤 Noriyuki Kishi
- 👤 Eitetsu Akiyama
- 👤 Atsushi Katoh
- 👤 Hiroki Munakata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 09:31
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B37/18; F02B37/24; F02D; F02D41/00; F02D41/0002; F02D41/0007; F02D41/02; F02D41/14; F02D41/1401; F02D2041/1409; F02D2200/00; F02D2200/02; F02D2200/04; F02D2200/0404; F02D2200/0414; F02D2200/70; F02D2200/703; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
152 words
A method of controlling supercharging pressure in an internal combustion engine having a supercharger, wherein the supercharging pressure created by said supercharger is controlled based on a basic control amount determined in dependence on operating conditions of said engine, said basic control amount being corrected in response to a difference between an actual value of the supercharging pressure and a desired value of same when said engine is in a feedback control region in which the supercharging pressure is to be controlled in feedback control mode, the method comprising the steps of: 1) detecting a change rate of the supercharging pressure; 2) determining whether or not said engine is in an operating condition immediately before entering said feedback control region; and 2) correcting said basic control amount in accordance with the detected change rate of the supercharging pressure when said engine is in said operating condition immediately before said feedback control region.
Claim 2
Independent Claim
152 words
A method of controlling supercharging pressure in an internal combustion engine having a supercharger, wherein the supercharging pressure created by said supercharger is controlled based on a basic control amount determined in dependence on operating conditions of said engine, said basic control amount being corrected in response to a difference between an actual value of the supercharging pressure and a desired value of same when said engine is in a feedback control region in which the supercharging pressure is to be controlled in feedback control mode, the method comprising the steps of: 1) detecting a change rate of the supercharging pressure; 2) determining whether or not said engine is in an operating condition immediately before entering said feedback control region; and 2) correcting said basic control amount in accordance with the detected change rate of the supercharging pressure when said engine is in said operating condition immediately before said feedback control region.
Claim 3
Dependent Claim
41 words
A method as claimed in claim 1, wherein when the detected change rate of the supercharging pressure shows that the supercharging pressure is increasing, said basic control amount is corrected so that the increase rate of the supercharging pressure is decreased.
Claim 4
Dependent Claim
41 words
A method as claimed in claim 1, wherein when the detected change rate of the supercharging pressure shows that the supercharging pressure is decreasing, said basic control amount is corrected so that the decrease rate of the supercharging pressure is decreased.
Claim 5
Independent Claim
33 words
A method as claimed in any of claims 1 - 3, wherein said basic control amount is corrected by a larger amount as the detected change rate of the supercharging pressure is larger.
Claim 6
Independent Claim
44 words
A method as claimed in any of claims 1 - 3, including the step of detecting the rotational speed of said engine, and wherein said basic control amount is corrected by a larger amount as the detected rotational speed of said engine is higher.
Claim 7
Dependent Claim
40 words
A method as claimed in claim 4, including the step of detecting the rotational speed of said engine, and wherein said basic control amount is corrected by a larger amount as the detected rotational speed of said engine is higher.
Claim 8
Dependent Claim
92 words
A method as claimed in claim 1, wherein said step (2) comprises the steps of (a) detecting the supercharging pressure, (b) detecting the opening of a throttle valve of said engine, and (c) determining that said engine is in said operating condition immediately before entering said feedback control region when the detected opening of said throttle valve is larger than a predetermined value and at the same time the detected supercharging pressure has exceeded a predetermined value which is lower than said desired value of the supercharging pressure by a predetermined amount.
Claim 9
Dependent Claim
32 words
A method as claimed in claim 7, wherein said predetermined amount is determined by at least one of the rotational speed of said engine and the change rate of the supercharging pressure.
Claim 10
Dependent Claim
25 words
A method as claimed in claim 8, wherein said predetermined amount is set to larger values as the rotational speed of said engine is higher.
Claim 11
Dependent Claim
29 words
A method as claimed in claim 8 or claim 9, wherein said predetermined amount is set to larger values as the change rate of the supercharging pressure is larger.
Claim 12
Independent Claim
198 words
A method of controlling supercharging pressure in an internal combustion engine having a supercharger, wherein the supercharging pressure created by said supercharger is controlled based on a basic control amount determined in dependence on operating conditions of said engine, said basic control amount being corrected in response to a difference between an actual value of the supercharging pressure and a desired value of same, when said engine is in a feedback control region in which the supercharging pressure is to be controlled in feedback control mode, the method comprising the steps of: 1) detecting the supercharging pressure; 2) determining whether or not said engine is in an operating condition immediately before entering said feedback control region; and 3) determining whether or not the detected supercharging pressure is higher than a predetermined value when said engine is in said operating condition immediately before entering said feedback control region; 4) controlling the supercharging pressure based upon said basic control amount when the detected supercharging pressure is above said predetermined value; and 5) controlling the supercharging pressure based upon a second basic control amount other than said first-mentioned basic control amount when the detected supercharging pressure is below said predetermined value.
Claim 13
Independent Claim
198 words
A method of controlling supercharging pressure in an internal combustion engine having a supercharger, wherein the supercharging pressure created by said supercharger is controlled based on a basic control amount determined in dependence on operating conditions of said engine, said basic control amount being corrected in response to a difference between an actual value of the supercharging pressure and a desired value of same, when said engine is in a feedback control region in which the supercharging pressure is to be controlled in feedback control mode, the method comprising the steps of: 1) detecting the supercharging pressure; 2) determining whether or not said engine is in an operating condition immediately before entering said feedback control region; and 3) determining whether or not the detected supercharging pressure is higher than a predetermined value when said engine is in said operating condition immediately before entering said feedback control region; 4) controlling the supercharging pressure based upon said basic control amount when the detected supercharging pressure is above said predetermined value; and 5) controlling the supercharging pressure based upon a second basic control amount other than said first-mentioned basic control amount when the detected supercharging pressure is below said predetermined value.
Claim 14
Dependent Claim
36 words
A method as claimed in claim 11, wherein said predetermined value of the supercharging pressure is determined by at least one of the rotational speed of said engine and a change rate of the supercharging pressure.
Claim 15
Dependent Claim
29 words
A method as claimed in claim 12, wherein said predetermined value of the supercharging pressure is set to lower values as the rotational speed of said engine is higher.
Claim 16
Dependent Claim
33 words
A method as claimed in claim 12 or claim 13, wherein said predetermined value of the supercharging pressure is set to lower values as the change rate of the supercharging pressure is larger.
Claim 17
Dependent Claim
53 words
A method as claimed in claim 11, wherein said predetermined value of the supercharging pressure is set to a value lower than said desired value of the supercharging pressure by a predetermined amount determined by at least one of the rotational speed of said engine and a change rate of the supercharging pressure.
Claim 18
Dependent Claim
25 words
A method as claimed in claim 11 or claim 12, wherein said second basic control amount is determined by the rotational speed of said engine.
Claim 19
Dependent Claim
27 words
A method as claimed in claim 16, wherein said second basic control amount is set to smaller values as the rotational speed of said engine is higher.
Claim 20
Dependent Claim
55 words
A method as claimed in claim 11, including the step of detecting the opening of a throttle valve of said engine, and wherein it is determined that said engine is in said operating condition immediately before entering said feedback control region when the detected opening of said throttle valve is larger than a predetermined value.
Claim 21
Independent Claim
137 words
A method of controlling supercharging pressure in an internal combustion engine having a supercharger, wherein feedback control of the supercharging pressure created by said supercharger is effected based on a control amount determined in response to a difference between an actual value of the supercharging pressure and a desired value of same, said feedback control being started on condition that said actual value of the supercharging pressure has increased above a predetermined value, the method comprising the steps of: 1) detecting at least one of an operating parameter of said engine and a parameter representative of an environmental condition of said engine; and 2) setting said predetermined value of the supercharging pressure in dependence on said at least one of said operating parameter of said engine and said parameter representative of said environmental condition of said engine.
Claim 22
Independent Claim
137 words
A method of controlling supercharging pressure in an internal combustion engine having a supercharger, wherein feedback control of the supercharging pressure created by said supercharger is effected based on a control amount determined in response to a difference between an actual value of the supercharging pressure and a desired value of same, said feedback control being started on condition that said actual value of the supercharging pressure has increased above a predetermined value, the method comprising the steps of: 1) detecting at least one of an operating parameter of said engine and a parameter representative of an environmental condition of said engine; and 2) setting said predetermined value of the supercharging pressure in dependence on said at least one of said operating parameter of said engine and said parameter representative of said environmental condition of said engine.
Claim 23
Dependent Claim
43 words
A method as claimed in claim 19, wherein said operating parameter of said engine includes the rotational speed of said engine, and said predetermined value of the supercharging pressure is set to higher values as the rotational speed of said engine is higher.
Claim 24
Dependent Claim
43 words
A method as claimed in claim 19, wherein said operating parameter of said engine includes the temperature of intake air in said engine, and said predetermined value of the supercharging pressure is set to higher values as the intake air temperature is higher.
Claim 25
Dependent Claim
45 words
A method as claimed in claim 19, wherein said operating parameter of said engine includes a change rate of the supercharging pressure, and said predetermined value of the supercharging pressure is set to higher values as the change rate of the supercharging pressure is larger.
Claim 26
Dependent Claim
50 words
A method as claimed in claim 19, wherein said operating parameter of said engine includes a gear position of a transmission of said engine, and said predetermined value of the supercharging pressure is set to a lower value as the gear position of said transmission is a lower speed position.
Claim 27
Dependent Claim
39 words
A method as claimed in claim 19, wherein said parameter representative of said environmental condition of said engine includes atmospheric pressure, and said predetermined value of the supercharging pressure is set to higher values as atmospheric pressure is lower.
Claim 28
Dependent Claim
27 words
A method as claimed in claim 19, wherein said predetermined value of the supercharging pressure is determined in dependence on said desired value of the supercharging pressure.
Claim 29
Dependent Claim
33 words
A method as claimed in claim 23, wherein said predetermined value of the supercharging pressure is set to a value lower than said desired value of the supercharging pressure by a predetermined amount.
Claim 30
Dependent Claim
42 words
A method as claimed in claim 25 or claim 26, wherein said desired value of the supercharging pressure is determined by at least one of said operating parameter of said engine and said parameter representative of said environmental condition of said engine.
Claim 31
Dependent Claim
20 words
A method as claimed in claim 26, wherein said predetermined amount is determined by said operating parameter of said engine.
Claim 32
Dependent Claim
40 words
A method as claimed in claim 27, wherein said desired value of the supercharging pressure is determined by at least one of the rotational speed of said engine, a gear position of a transmission of said engine, and atmospheric pressure.
Claim 33
Dependent Claim
35 words
A method as claimed in claim 28, wherein said predetermined amount is determined by at least one of the change rate of the supercharging pressure and a gear position of a transmission of said engine.
Claim 34
Independent Claim
144 words
A method of controlling supercharging pressure in an internal combustion engine having a supercharger, wherein feedback control of the supercharging pressure created by said supercharger is effected based on a control amount determined in response to a difference between an actual value of the supercharging pressure and a desired value of same, said feedback control being started on condition that said actual value of the supercharging pressure has increased above a predetermined value, the method comprising the steps of: 1) detecting the supercharging pressure; 2) determining whether or not the supercharging pressure has increased above said predetermined value; 3) when the supercharging pressure has increased above said predetermined value, determining whether or not a predetermined period of time has elapsed after the supercharging pressure has increased above said predetermined value; and 4) starting said feedback control when said predetermined period of time has elapsed.
Claim 35
Independent Claim
144 words
A method of controlling supercharging pressure in an internal combustion engine having a supercharger, wherein feedback control of the supercharging pressure created by said supercharger is effected based on a control amount determined in response to a difference between an actual value of the supercharging pressure and a desired value of same, said feedback control being started on condition that said actual value of the supercharging pressure has increased above a predetermined value, the method comprising the steps of: 1) detecting the supercharging pressure; 2) determining whether or not the supercharging pressure has increased above said predetermined value; 3) when the supercharging pressure has increased above said predetermined value, determining whether or not a predetermined period of time has elapsed after the supercharging pressure has increased above said predetermined value; and 4) starting said feedback control when said predetermined period of time has elapsed.
Claim 36
Dependent Claim
25 words
A method as claimed in claim 31, wherein said predetermined period of time is set in dependence on a change rate of the supercharging pressure.
Claim 37
Dependent Claim
28 words
A method as claimed in claim 32, wherein said predetermined period of time is set to shorter values as the change rate of the supercharging pressure is smaller.
Claim 38
Dependent Claim
39 words
A method as claimed in claim 31, wherein said predetermined value of the supercharging pressure is determined by at least one of an operating parameter of said engine and a parameter representative of an environmental condition of said engine.
Claim 39
Dependent Claim
46 words
A method as claimed in claim 34, wherein said operating parameter of said engine includes the rotational speed of said engine, the temperature of intake air in said engine, a change rate of the supercharging pressure, and a gear position of a transmission of said engine.
Claim 40
Dependent Claim
21 words
A method as claimed in claim 34, wherrein said parameter representative of said environmental condition of said engine includes atmospheric pressure.
Claim 41
Independent Claim
170 words
A method of controlling supercharging pressure in an internal combustion engine having a supercharger, wherein open loop control of the supercharging pressure created by said supercharger is effected based upon a control amount determined in dependence on operating conditions of said engine when said engine is in an open loop control region, and feedback control of the supercharging pressure is effected based on a control amount determined in response to a difference between an actual value of the supercharging pressure and a desired value of same, the method comprising the steps of: 1) detecting the supercharging pressure; 2) detecting the opening of a throttle valve of said engine; 3) determining whether or not the supercharging pressure is in a steady state or in a transient state, based upon the detected supercharging pressure and the detected opening of the throttle valve; 4) effecting the feedback control, when the supercharging pressure is in the steady state; and 5) effecting the open loop control, when the supercharging pressure is in the transient state.
Claim 42
Independent Claim
170 words
A method of controlling supercharging pressure in an internal combustion engine having a supercharger, wherein open loop control of the supercharging pressure created by said supercharger is effected based upon a control amount determined in dependence on operating conditions of said engine when said engine is in an open loop control region, and feedback control of the supercharging pressure is effected based on a control amount determined in response to a difference between an actual value of the supercharging pressure and a desired value of same, the method comprising the steps of: 1) detecting the supercharging pressure; 2) detecting the opening of a throttle valve of said engine; 3) determining whether or not the supercharging pressure is in a steady state or in a transient state, based upon the detected supercharging pressure and the detected opening of the throttle valve; 4) effecting the feedback control, when the supercharging pressure is in the steady state; and 5) effecting the open loop control, when the supercharging pressure is in the transient state.
Claim 43
Dependent Claim
42 words
A method as claimed in claim 37, wherein said steady state is a state in which the opening of said throttle valve is larger than a predetermined value, and at the same time the supercharging pressure is higher than a predetermined value.
Claim 44
Dependent Claim
36 words
A method as claimed in claim 38, wherein said predetermined value of the opening of said throttle valve corresponds to a value of the opening of said throttle valve assumed when it is almost fully open.
Claim 45
Dependent Claim
32 words
A method as claimed in claim 37, wherein the supercharging pressure is detected by a pressure sensor which is arranged in an intake system of said engine downstream of said throttle valve.
Claim 46
Dependent Claim
39 words
A method as claimed in claim 38, wherein said predetermined value of the supercharging pressure is determined by at least one of an operating parameter of said engine and a parameter representative of an environmental condition of said engine.
Claim 47
Dependent Claim
46 words
A method as claimed in claim 41, wherein said operating parameter of said engine includes the rotational speed of said engine, the temperature of intake air in said engine, a change rate of the supercharging pressure, and a gear position of a transmission of said engine.
Claim 48
Dependent Claim
21 words
A method as claimed in claim 41, wherein said parameter representative of said environmental condition of said engine includes atmospheric pressure.
References Cited (Backward Citations)
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